GAS GAS TXT 125 2018, Workshop Manual

Page: 14 / 84

Workshop manual
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Periodic inspection
ATTENTION:
Before removing the spark plug, blow compressed air around it to remove any
dirt, making sure that it does not fall into the engine.
Remove:
- Spark plug cap.
- Spark plug.
Check:
- Spark plug type
incorrect => Replace
Inspect:
- Electrode (1)
damage/wear => Replace
- insulator (2)
abnormal colour => Replace
normal colour is light brown
Clean:
- Spark plug
(clean spark plug with spark plug cleaner or steel brush)
Measure:
- Play between electrodes (a). (with feeler gauge)
out of specification => adjust play.
Play between electrodes: 0.7 mm - 0.8 mm
Fit:
- Spark plug
1.2 - 1.4 kgf·m (12-14 nm)
NOTE:
- Before fitting the spark plug, clean the surface of its seating and gasket.
- If you do not have a torque wrench, a good guide for the correct torque is to
tighten the spark plug by hand to position (1) and then tighten with a ¼ to ½
turn to position (2).
- Always use a new gasket.